MIXER DRUM DRIVING DEVICE

摘要

A mixer drum driving device provided with a mixer drum, a hydraulic motor, a hydraulic pump, an auxiliary hydraulic pump that supplies hydraulic oil to the hydraulic motor independently from the hydraulic pump to cause the mixing rotation of the mixer drum, and a brushed DC electric motor that drives the rotation of the auxiliary hydraulic pump, wherein if the engine is stopped during the mixing rotation of the mixing drum, the rotation of the auxiliary hydraulic pump is driven by the brushed DC electric motor.